clearheaded
adjective
                                                                                                                            
                                                            clear·head·ed
                    
                                                                                                              
                                                                                                                                  ˈklir-ˌhe-dəd  
                                                      
                                                          
            1
                    
                                          
              
          
                                                      : having or showing a clear understanding : perceptive                                      
              
                             
clearheaded comments
                         
                
                    2
                    
                                          
              
          
                                                      : able to think clearly                                      
              
                             
stay calm and clearheaded
                         
                
                    
                                                      clearheadedly
                                      adverb
                                                                            
    
                                                      clearheadedness
                                      noun
                                                                            
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  Merriam-Webster unabridged




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